STN EN ISO 643
| Name: | STN EN ISO 643 |
| Validity: | Withdrawn |
| Number of pages: | 30 |
| Language: |
EN
|
| Paper: | 14,10€ |
| Electronic version |
a) Only read (without ability to print and copy)
12,69€ b) Without ability to print, with ability to copy (printscreen) 14,10€ c) With ability to print and copy (printscreen) 18,33€ |
| Slovak title | Ocele. Mikrografické stanovenie viditeľnej veľkosti zrna (ISO 643: 2019) |
| English title | Steels - Micrographic determination of the apparent grain size (ISO 643:2019) |
| Release Date: | 01. 07. 2020 |
| Date of withdrawal: | 01. 09. 2020 |
| ICS: | 77.040.99 |
| Sorting character/National clasification code | 42 0304 |
| Level of incorporation: | idt EN ISO 643:2020, idt ISO 643:2019 |
| Official Journal | 06/20 |
| Amendments | |
| Replaced by: | STN EN ISO 643:2020-09 (42 0304) |
| Repleces: | STN EN ISO 643:2013-06 (42 0304) |
| Note in Official Journal: | |
| Subject of the standard: | This document specifies a micrographic method of determining apparent ferritic or austenitic grain size in steels. It describes the methods of revealing grain boundaries and of estimating the mean grain size of specimens with unimodal size distribution. Although grains are three-dimensional in shape, the metallographic sectioning plane can cut through a grain at any point from a grain corner, to the maximum diameter of the grain, thus producing a range of apparent grain sizes on the two-dimensional plane, even in a sample with a perfectly consistent grain size. |
| Preview: | Náhľad normy (PDF) |